以1.4版本举例

准备connection_profile

各个orderers节点的tlsca证书其实是一样的，peers节点也是一样的情况

--- # # Copyright Fujitsu Australia Software Technology, IBM Corp. All Rights Reserved. # # SPDX-License-Identifier: Apache-2.0 # # # The network connection profile provides client applications the information about the target # blockchain network that are necessary for the applications to interact with it. These are all # knowledge that must be acquired from out-of-band sources. This file provides such a source. # name: Network-Config version: "1.0.0" client: # 客户端使用Org1的Admin用户的认证信息 organization: Org1   connection: timeout: peer: endorser: 300 orderer: 300 organizations: Org1: mspid: Org1MSP     peers: - peer1.org1.example.com       - peer2.org1.example.com       - peer3.org1.example.com     adminPrivateKey: # Org1的Admin用户私钥来源： # crypto-config/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/keystore/xxxxxxxxxxxxxxxxxxxxxxxxx_sk pem: |         -----BEGIN PRIVATE KEY-----         AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA         AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA         AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA         -----END PRIVATE KEY----- signedCert: # Org1的Admin用户公钥证书来源： # crypto-config/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/signcerts/Admin@org1.example.com-cert.pem pem: |         -----BEGIN CERTIFICATE-----         BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB         BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB         BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB         -----END CERTIFICATE----- # 列出可用channel channels: mychannel1: orderers: - orderer1.example.com       - orderer2.example.com       - orderer3.example.com     peers: peer1.org1.example.com: endorsingPeer: true chaincodeQuery: true ledgerQuery: true eventSource: true peer2.org1.example.com: endorsingPeer: true chaincodeQuery: true ledgerQuery: true eventSource: true peer3.org1.example.com: endorsingPeer: true chaincodeQuery: true ledgerQuery: true eventSource: true mychannel2: orderers: - orderer1.example.com       - orderer2.example.com       - orderer3.example.com     peers: peer1.org1.example.com: endorsingPeer: true chaincodeQuery: true ledgerQuery: true eventSource: true peer2.org1.example.com: endorsingPeer: true chaincodeQuery: true ledgerQuery: true eventSource: true peer3.org1.example.com: endorsingPeer: true chaincodeQuery: true ledgerQuery: true eventSource: true orderers: orderer1.example.com: url: grpcs://10.10.0.1:7050 grpcOptions: ssl-target-name-override: orderer1.example.com       hostnameOverride: orderer1.example.com       grpc.keepalive_time_ms: 300000 grpc.keepalive_timeout_ms: 20000 tlsCACerts: # orderer1的https认证CA来源： # crypto-config/ordererOrganizations/example.com/orderers/orderer1.example.com/msp/tlscacerts/tlsca.example.com-cert.pem pem: |         -----BEGIN CERTIFICATE-----         CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC         CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC         CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC         -----END CERTIFICATE----- orderer2.example.com: url: grpcs://10.10.0.2:7050 grpcOptions: ssl-target-name-override: orderer2.example.com       hostnameOverride: orderer2.example.com       grpc.keepalive_time_ms: 300000 grpc.keepalive_timeout_ms: 20000 tlsCACerts: pem: |         -----BEGIN CERTIFICATE-----         CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC         CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC         CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC         -----END CERTIFICATE----- orderer3.example.com: url: grpcs://10.10.0.3:7050 grpcOptions: ssl-target-name-override: orderer3.example.com       hostnameOverride: orderer3.example.com       grpc.keepalive_time_ms: 300000 grpc.keepalive_timeout_ms: 20000 tlsCACerts: pem: |         -----BEGIN CERTIFICATE-----         CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC         CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC         CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC         -----END CERTIFICATE----- peers: peer1.org1.example.com: url: grpcs://10.10.1.1:7051 grpcOptions: ssl-target-name-override: peer1.org1.example.com       hostnameOverride: peer1.org1.example.com       grpc.http2.keepalive_time: 60 tlsCACerts: # Org1的peer1的https认证CA来源： # crypto-config/peerOrganizations/org1.example.com/peers/peer1.org1.example.com/msp/tlscacerts/tlsca.org1.example.com-cert.pem pem: |         -----BEGIN CERTIFICATE-----         DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD         DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD         DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD         -----END CERTIFICATE----- peer2.org1.example.com: url: grpcs://10.10.1.2:7051 grpcOptions: ssl-target-name-override: peer2.org1.example.com       hostnameOverride: peer2.org1.example.com       grpc.http2.keepalive_time: 60 tlsCACerts: pem: |         -----BEGIN CERTIFICATE-----         DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD         DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD         DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD         -----END CERTIFICATE----- peer3.org1.example.com: url: grpcs://10.10.1.3:7051 grpcOptions: ssl-target-name-override: peer3.org1.example.com       hostnameOverride: peer3.org1.example.com       grpc.http2.keepalive_time: 60 tlsCACerts: pem: |         -----BEGIN CERTIFICATE-----         DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD         DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD         DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD         -----END CERTIFICATE----- 

fabric-sdk-java使用demo

初始化客户端

 private HFClient client; private NetworkConfig netConfig; @PostConstruct public void initClient() {   netConfig = NetworkConfig.fromYamlFile(Paths.get(pemDir, CONNECTION_PROFILE).toFile()); // 创建HFClient实例   client = HFClient.createNewInstance();   client.setCryptoSuite(CryptoSuite.Factory.getCryptoSuite());   client.setUserContext(netConfig.getClientOrganization().getPeerAdmin()); } 

连接到channel

 private synchronized Channel getChannel(String name) {   Channel channel = client.getChannel(name); if (channel != null) { return channel; } // 创建通道实例 // 实例已缓存入client的内部map   channel = client.loadChannelFromConfig(name, netConfig);   channel.initialize(); return channel; } 

query链码

为使用protobuf为出入参进行序列化，需配置protobuf-maven-plugin来自动把proto定义编译为java对象

 public void testChainCodeQuery() {   Channel channel = getChannel("mychannel1");   ChaincodeID cid = ChaincodeID.newBuilder().setName("chaincode1").build(); // query链码   QueryByChaincodeRequest query = client.newQueryProposalRequest();   query.setChaincodeID(cid);   query.setFcn("queryFunction1"); // 假设查询参数是简单的单据号   query.setArgs("xxxxxxx");   Collection<ProposalResponse> rsp = channel.queryByChaincode(query);   ProposalResponse pr = rsp.iterator().next(); if (pr.getStatus().equals(Status.SUCCESS)) { // QueryResult是protobuf定义的对象，复杂的返回结果需要protobuf进行反序列化    QueryResult result = QueryResult.parseFrom(pr.getProposalResponse().getResponse().getPayload());    log.info(result.toString()); return; } } 

invoke链码

 public void testChainCodeInvoke() {   Channel channel = getChannel("mychannel1");   ChaincodeID cid = ChaincodeID.newBuilder().setName("chaincode1").build(); // InvokeParam是protobuf定义的对象，复杂的提交参数需要protobuf进行序列化   InvokeParam.Builder builder = InvokeParam.newBuilder();   builder.setXXX(XXX);   builder.setYYY(YYY);   builder.setZZZ(XXX);   builder.setLoanNo(LOAN);    TransactionProposalRequest invoke = client.newTransactionProposalRequest();   invoke.setChaincodeID(cid);   invoke.setFcn("invokeFunction1");   invoke.setArgs(builder.build().toByteArray()); // 让endorsing peer验证请求，并返回新的区块信息   Collection<ProposalResponse> rsp = channel.sendTransactionProposal(invoke);   ProposalResponse pr = rsp.iterator().next(); if (!pr.getStatus().equals(Status.SUCCESS)) {    log.info("invokeFunction1 failed: {}", pr.getProposalResponse().getResponse().getMessage()); return; } // 正式提交新区块给orderer   TransactionEvent event = channel.sendTransaction(rsp).get();   log.info("Transaction ID: {}", event.getTransactionID()); }